The insulating liquids used in industrial applications are typically mineral oils. In recent years however, significant attention has been paid to alternative fluids, including synthetic and natural ester liquids. order expand their practical applications, it is important have detailed information on dielectric properties. this present paper, the properties of ester, Midel 7131; oil, Shell Diala D; vegetable (rapeseed) oil investigated. It shown that 7131 a higher ac breakdown voltage (27.6...

With the continuous increase of photovoltaic (PV) penetration, voltage control interactions between newly installed PV inverters and previously deployed on-load tap-changer (OLTC) transformers become ever more significant. To achieve coordinated regulation, current methods often rely on a decision-making algorithm to fully take over both OLTC. Consequently, OLTC has give up its autonomous tap switching logic executes corresponding upgrades in order be controlled by new algorithm. Aiming at...

Selective removal of the silicon underneath inductors in RF integrated circuits based on inductively coupled plasma (ICP) deep trench technology is demonstrated by a complementary metal-oxide-semiconductor (CMOS) 5-GHz low-noise amplifier (LNA) and 4-GHz voltage-controlled oscillator (VCO). Design principles multistandard LNA with flat low noise figures (NFs) within specific frequency range are also presented. A 2-dB increase peak gain (from 21 to 23 dB) 0.5-dB 2.28 1.78 decrease minimum NF...

The electrical performance of 4H-SiC Power MOSFETs is studied at temperatures from 93K to 473K. With the decrease operation temperature, threshold voltage found increase linearly whereas on-resistance shows a minimum value within whole temperature range. rapid lower ascribed presence large densities interface traps SiC/SiO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> interface. In addition, breakdown also measured down and...

Abstract Cold atmospheric plasma (CAP) is a group of various chemical active species, such as ozone and nitric oxide, generated by working gas. CAP was demonstrated to have an effect on tissue regeneration wound healing. We conducted this study evaluate the efficacy safety novel therapy for diabetic wounds in vitro vivo. The consists ionised helium gas that produced high‐voltage high‐frequency power supply. Eight‐week‐old male db/db mice C57BL were treated with (control group), 90s'...

Background Owing to the long penetration depth of gamma (γ)-rays, individuals working in ionizing radiation environments are chronically exposed low-dose γ-radiation, resulting cognitive changes. Dose rate significantly affects radiation-induced biological effects; however, its role chronic γ-irradiation-induced impairment remains unclear. We aimed investigate whether γ-irradiation at low-dose-rate (LDR) could induce and compare alteration caused by LDR high-dose-rate (HDR). Methods The rats...

This paper explores the possibilities of using impulsive and steady-state corona discharges for biodecontamination operations. A high tension tubular electrode was stressed with positive or negative dc voltage magnitude up to 26 kV, a grounded mesh used as an opposite electrode. Different operational regimes this generator were investigated production ozone in air flow inactivation microorganisms. The test microorganisms work Escherichia coli Staphylococcus aureus, populations which seeded...

A multicenter retrospective study.The purpose of this study was to explore risk factors dysphagia after anterior cervical surgery and affecting rehabilitation 2 years surgery.Patients who underwent at 3 centers from January 2010 2013 were included. The possible included aspects: demographic variables-age, sex, body mass index (BMI): hypertension, diabetes, heart disease, smoking, alcohol use, diagnose (cervical spondylotic myelopathy or ossification posterior longitudinal ligament),...

Diabetic nephropathy (DN) is one of the most common complications diabetes mellitus (DM), and has been demonstrated as major causes renal failure. In a previous study, it was noted that microRNA let‑7a‑5p downregulated in DN; however, underlying mechanism requires additional investigation. The aim present study to investigate roles pathogenesis DN its associated mechanism. tissues db/db db/m mice, mesangial cells treated with high concentrations glucose were obtained; reverse...

&lt;i&gt;Background:&lt;/i&gt; Studying saccades is a useful tool to investigate brain function. There still controversy regarding deficits in prosaccades Alzheimer’s disease (AD), and study of subjects with mild cognitive impairment (MCI) has not been published date. &lt;i&gt;Methods:&lt;/i&gt; We examined horizontal 10 healthy elderly, 9 MCI AD patients. Two tasks were used: gap (fixation target extinguishes prior onset) overlap stays on after onset). Eye movements recorded the Skalar IRIS...

Diabetic foot ulcer (DFU) impairs the quality of life diabetic patients and overburdens healthcare systems society. It is crucial to comprehend pathophysiology DFU develop effective treatment strategies. The aim this study was evaluate therapeutic potential Lactobacillus Plantarum (LP) on wound healing in explore underlying mechanisms.

Surface breakdown of oil-immersed solids chosen to insulate high-voltage, pulsed-power systems is a problem that can lead catastrophic failure. Statistical analysis the voltages, or times, associated with such liquid-solid interfaces reveal useful information aid system designers in selection solid materials. Described this paper are results Weibull statistical analysis, applied both breakdown-voltage data and time-to-breakdown generated gaps consisting five different polymers immersed...

Pulsed electric field (PEF) treatment can be used to facilitate microbial cell lysis. The aim of this paper is investigate effect PEF on microalgae. system in consists a pulse generator and with parallel-plane metallic electrodes. microalgae, Spirulina, was conducted using 33.3 66.7-kV/cm impulses. efficiency the for inactivation microalgae assessed by comparison growth curves PEF-treated untreated samples. Results showed that stopped application between 100 500 high-field impulses magnitude...

It has been proven that hydroxyl (OH) radicals can be generated by streamer discharges across water surfaces under ambient atmospheric conditions. Hydroxyl have the highest oxidation capability amongst all oxygen-based reactive species, thus OH play an important role in of organic molecules and bactericidal effects plasma discharges. In this study, generation pulsed was investigated. Terephthalic acid used as a chemical probe is converted into 2-hydroxyterephthalic (HTA) reaction with...

The complexity of the impulse breakdown liquid water is reflected by dependency pre-breakdown processes on polarity, rise-time and wave-shape applied impulses as well physical properties, such electrical conductivity itself. Further understanding mechanisms formation propagation discharges in solutions therefore required to enable development pulsed power plasma technologies. This paper presents a study dielectric behaviour stressed with positive negative high voltage point-plane electrode...

Underwater spark discharges are used in multiple practical applications including plasma closing switches, water treatment, channel drilling and mineral processing, waste recycling, treatment of metals, medical lithotripsy.Spark have been studied for several decades, however, despite significant research efforts progress this area, further investigation into the efficiency plasma-acoustic sources their optimisation is required order to expand application.This paper aimed at electrical...

This paper investigated hydroxyl radicals and hydrogen peroxide formation under a needle-plate electrode configuration using positive-polarity dc discharges generated in air, nitrogen, helium. The discharge mode air nitrogen was found to change above ultrapure water; initially, nanosecond pulse observed, transitioning diffuse due the increasing conductivity of water. helium repetition rate increased with water conductivity. It that contribute 7%, 78%, 70% when helium, respectively. is...

Background: Long noncoding RNAs (lncRNAs) regulate the pathogenesis of Alzheimer’s disease (AD). Objective: To identify lncRNAs in peripheral blood as potential diagnostic biomarkers for amnestic mild cognitive impairment. Methods: In discovery group, a microarray was used to screen significant differences lncRNA expression between patients with impairment (MCI) caused by AD and normal controls (NCs) ( n = 10; MCI, 5; NC, 5). Furthermore, two analytic groups were assessed (analytic group 1:...

This paper describes a novel monolithic low voltage (1-V) CMOS RF front-end architecture with an integrated quadrature coupler (QC) and two subharmonic mixers for direct-down conversion. The LC-folded-cascode technique is adopted to achieve low-voltage operation while the in conjunction QC are used eliminate LO self-mixing. In addition, inherent bandpass characteristic of LC tanks helps suppression leakage at port. circuit was fabricated standard 0.18-mum process 5-6 GHz applications. At 5.4...